Printing-plate roll



R. J. SMOTHERS PRINTING PLATE ROLL May 25, 1926. 1,586,478

Filed Sept. 11, 1925 INVENTOR.

Ml WLWZ I ATTORNEY.-

z y Q a ew Umrnn srarss ma ageme- 1 nonnnr JAnvIssMo'rHnns, or noLYoKn, MASSACHUSETTS, nssrsnon'ro JAMES 'r.

nonrnson, or HOLYOKE, MASSACHUSETTS.

' rnnvzrme-rnntrn ROLL.

Application filed September 11, 1925. Serial no. 55,806.

i This invention relates to a plate roll for printing and 1s deslgned primarily for use in connection with plates for textile and 1 wall paper printing, but it is to be understood that a roll, in accordance with this invention, can be employed for any purposes for which it isfound applicabl and the invention has for its object to provide, in a manner as hereinafter set forth, a plate roll adapted to have detachably secured thereto a printing plate in cylindrical form and with the roll having means engaging with the plate for maintaining the opposed edges of the latter inabutting, overlapping engagement, to provide for the matching of the freeed es of the design on the plate whereby a continuous design is set up for printing upon fabric or wall paper.

As is well known in textileor wall paper printing, the design is an inherent part of a printing roll, and to produce the same,

the roll which is generally in the form of a hollow copper body, although in some instances it is in the form of a solid copper cylindrical body, has the periphery thereof engraved or otherwise provided throughout with the design or a portion thereof that is to be printedon the material. After the printing operation the engraved roll is discarded, but in some instances smoothed off to enable the engraving on the periphery thereof a new design or a ortion thereof, and which method 'entai s considerable time, expense and loss. A roll, in accordance with this invention, is designed to have a printing plate detachablysecured thereto and after the plate has been used, it is removed from the roll and the latter can be again employed for other plates. Therefore a roll, in accordance with this invention, overcomes the expensive engraving" step, as well as discarding or smoothing off of the roll, and under such circumstances.

operating costs are materially reduced.

The plate roll, forming the subject matter of this application, is designed as an improvement upon :the plate roll as disclosed in my application S. N. 728,425, tiled Jan. and the roll,in accordance with this invention, overcomes the necessity of welding the bendable plate to the roll hodygas the. latter includes means cos forth, a plate roll which is'simple in its construction and arrangement, strong, durable, compact, thoroughly efiicient and convenient in its use, readily installed in a press, quickly assembled to maintain the printing plate in position thereon, as well as quickly disassembled to prov de for. the

removal of the printing plate, and compar atively inexpensive to manufacture.

\Vith the foregoing and other objects in view, the invention consists of the novel construction, combination and arrangement of parts, as hereinafter more'specifically described and illustrated in the accompanying drawings, wherein is shown an embodiment ofthe inventiombut it is to be understood that changes, variations, and modifications can be resorted to wlnch come within the scope of the claims hereunto ap-" pended.

In the drawings wherein like reference 1 characters I denote corresponding-- parts throughout the several views 1 Figure 1 is an elevation of plate roll in accordance with this invention. a

F1gure2 ls'an' end elevation thereof. Figure 3 1s a fragmentaryview, in 1011- gitudinal section, illustrating one end of a plate roll.

, F"gure 4 is ure 1. r I

Figure 5 is a cross sectional View of a plate roll showing the printing plate attached in position thereon. I

- A printing plate,.which is to, be employed in connection with a plate roll in accordance with this invention, is illustrated. in section in Figure. 5' and as appliedtothe roll body. The printing plate is indicated at 1 and consists of a body portion of sheet metal of the desired thickness and which has its outer face 2 provided in any suitable manner with at design, not shown,

asection online M Figwhich is to b e/printed upon the material operated on. The design is so disposed on mounted on the plate roll.

til

form of a true cylinder and secured to the plate roll, the free edges of the design will be matched to form a continuous design which is to be printed on the material or transferred to be printed on the material during tae operation of offset printing. The horizontal edges of the plate 1 are bevelled, as at 3, 1, so that when the plate is in the position shown in Figure 5, the said edges not only abut, but will overlap to provide for the matching of the free edges of a design whereby a continuous design is set up. The bevelled edge 3 extends at an inward inclination whereas the bevelled edge -l extends at an outward inclination, or in other words, the bevels are disposed in parallel incline planes to provide for the positioning of the edges in the manner as heretofore set forth, when the edges are Secured to each end of the plate 1, at the inner face thereof, and flush with the bevelled edges 3, 1 is a pair. of attaching bars 5, 6 which extends from one side edge to the other side edge of the plate 1. The bar is of less width than the bar 6, but both bars are of the same height and length. The inner face of the bar is inclined or bevelled through out upon the same plane and the outer face of the bar 5 is formed upon vertical and inclined planes, intercepting each other. The bevelled ant straight portions on the outer face of the bar 5 are indicated at 8, S) and the bevel 8 forms a continuation of the bevelled edge The bar 6 has its inner face bevelled or inclined, which extends in the same plane throughout and the outer face of the bar 6 has the outer portion thereof bevelled or extending upon an inclined plane and which forms a continuation of the bevelled edge 4. The inner portion of the outer face of the bar 6 is straight and when theplate is connected to the roll body said inner portion is positioned in a. plane parallel to the plane of the horizontal diameter of the roll. 4

A plate roll in accordance with this invention comprises a body portion formed of two semi-cylindrical sections and means coacting with the ends of said sections for maintaining them in abut-ting engagement. One of the sections of the roll body is generally referred to by the reference character 13 and the other by the reference character 11. As both sections of the roll body are of like construction, but one will he described, as the description of one will apply to the other. Each roll body section is formed with a reduced extension at each .end and each extension is fo'ined of an inner portion 15 having a tapered periphe'ry 16. Each of said extensions further include a reduced semi-cylindrical portion 17 provided with peripheral threads 18. A Semi-cylindrical portion ITnierges'in the poses.

outer end of the tapered portion 16. hen the extensions of the section 13 are arranged in coacting relation with respect to the extensions of the section 1-l, the tapered portion '15 of an extension of the section 13 forms a continuation of the tapered portion 15 of the section 1i and this statement also applies to the reduced portion 17 of the section 13 with respect to the reduced portion 17 of the section 1 1.

The inner face of the section 13 is formed with a series of spaced sockets 19, and in which are adapted to extend, when the roll sections are in abutting engagement, holding pins 20 which are secured to and project from the inner face of the section 1 1. The pins 20 when engaged in the sockets 19 prevent the sections 13 and 14 from shifting relatively to each other.

The inner face of the section 13 is cut away to provide a triangular shaped pocket 21 which opens at the periphery of said section, and the section 14, at its inner face is cut away to provide a triangular shaped pocket 22 which opens at the periphery of the section 1 1. The pockets extend from one end to the other end of said roll sections and are of the same depth, but the pocket 22 is of greater width than the pocket 21 throughout. The pocket 21 is adapted to re ceive the attaching bar 5 and the pocket. 22 the attaching bar 6. The width of the inner end of the attaching bar 5 is less than the width of the pocket 21 at its inner end. hen the attaching bar 5 is mounted in the pocket 21 the inclined face 7 thereof abuts against the inclined wall 23 of the pocket 21. The attaching bar 5 when mounted in the pocket 21 docs not extend completely over the bottom of the pocket 21. The at-- tac-hing bar (5 is of a width greater than the width of the pocket 22 and in said pocket mounted said bar (3. ll'hcn the roll sections are held in abutting engagement, the attaching bur ti enters pocket 21 andseats on the bottom thereof, as well as abuts against the outer face of the bar 5, see Figure 5. The attaching bars 5 and 6 coact with the pockets 21 and 22, to couple or socure the plate 1 to the roll body in the 1nanner as'shown in Figure 5. By shiftingthe roll sections 13 and 1 1 to a position so that the inner faces thereof will extend at an inclination with respect to each other, the attaching'bars 5 and 6 can be removed from the pockets 21 and whereby the plate 1 can be shifted from off the roll body.

As beforestated, means are arranged at each end of the sections of the roll body. for the purpose of maintaining them in abutting engagement, whereby the plate 1 when connected with the roll body by the attaching bars and p ckets, will be secured thereto, so thattheTplate can be used for printing purhe means 'at' "each end of theses- (ill tions of the roll body prevent the separationthereof, when in abutting position, and

under such conditions prevent any outward movement of the plate 1 with respect to the roll body. The meanswhich is arranged at each end otthe roll body, coacts with the threaded'portions 17 and the tapered portion 15 for securely maintaining the sections Each of the said securing means consists of a spindle 2%., of substantial length, and which at its inner end is formed integral with a cylindrical head 25 of materially greater diameter than the spindle Formed integral with the head 25, is an annular cap piece 26 having a portion of'its inner face bevelled as at 27 and the remaining portion threaded as at 28. Thetlaring portion 27 isplane andwedges against the plane tapered peripheral face of a pairot' abutting portions 15 and the threads 28 on the inner face of a cap 26 engage with the threads 18 on a pair of abutting portions 17, see Figure 3. The securing means,

each end of theroll body, may be termed coupling members and not only connector secure the sections 13, 14: together, due to the threaded engagement of the coupling members with. the part 17. The bevelled portion 27 of the cap acting upon the tapered portions 15set up awedging orbinding action so that thesections 13 and 14 will be held abutting against cachother throughout. p

After'the plate 1 has been rcmm'ed from the sections '13, 141:, and the roll body can then be employed for other plates. The connecting of the plate to the roll body in the manner as stated, sets up the plate in the formof a true cylinder and with the opposed edges of the plate in abutting,

overlapping engagement, to provide for the matching of the free edges of a design whereby a continuous design is set up when printing.

As the plate is ccnstructed independently of the roll, after the" plate has been used, it does not necessitate the discarding or smoothing of a roll for when the plate is removed from the roll another plate can be immediately attached thereto. 7

It is thought that the many advantages of a plate roll, in accordance with this inven- 1 tion, for use in connection with plates for text1le and wall paper printing can be read- 1ly understood from the foregoing description taken in connection with the accomq panying' drawings, and although the preferred embodiment of the invention is as il-' lustrated and described, yet 1t 1s to be underused, it is stood that changes in the details of construction can be had which will fall within the scope of the invention as claimed.

What I claim is v 1 e 1. A plate roll comprising a body portion formed of a pair of sections adapted to be detachably secured together in. abutting engagcment and each having the inner face 3 thereof providedwith a lengthwise extending pocket for the reception oi an attaching bar carriedat one end of a bendable printing plate for connecting the plate in cylindrical. form ag iinst said body portion when said sections are in abutting engagement,

and means engaging with the ends of said sections when in abut-ting engagement for detachably secur ng said sections together. 2. A plate roll compr sing a bot yportion i ornied oitapair of sections adapted to be detachably secured together in abutting engagement and each having the inner face.

thereof provided with a lengthwise extendingpocliet tor the receptionoi an attaching bar carried at one end of a bendable printing plate for connecting the plate in cylindrical form against said body portion when said sections are in abutting engagement, and means engaging with the ends of said sections when in abutting engagement for detacnably securing said sections together, and said sections 'having interengaging means to prevent one shifting relatively to theother when in abutting engagement.

3.- A plate roll comprising a body portion formed of a pair of sections adapted to be detachably securedtogether in abutting engagement and eachghaving the inner face thereof provided with ailengthwlse extendin pocket for the reception oi an attaching bar carried at one end of a bendable print in Jlate l'or connectiin the alate in 0 lin t: v a

drical form'against the body portion when said sections are .in abutting engagement, and means engaging with the ends oft said sections when in abutting engagement for detachably securing said sections together, and each of said pockets of the same length as the lengthot a section and of triangular contour.

4. A. plate roll comprising a body portion forned of a pair of sectionsadaptedto be detachably secured together in abutting engagement and each having the inner face thereof provided with a lengthwise extending pocket for the reception of an attaching bar carried at one end of a bendable printing platejfor connecting the plate in cylindrical form against said body portion when said sections are in abutting engagement, and means engaging with the ends ofsaid sections when in abutting engagement for detachably securing said sections together, and said sections having interengaging means to prevent one shitting relatively to the other said pockets of the same length as the sections and of triangular contour.

5. A plate roll comprising a body portion formed of a pair of send-cylindrical sections adapted to be dctachably secured together in a batting engagement and each having its flat face thereof provided with a lengthwise extending triangular shaped pocket for the reception of an attaching bar carried at one end of a bendable printing plate for connecting the plate in cylindrical form against said body portion when said sections are in abutting engagement, each of said pockets of triangular contour throughout, and means engaging with the ends of said sections when in abutting engagement for detachably securing said sections together.

(3. A plate roll comprising a body portion formed of a pair of semi-cyuindrical sections a .la te:;l to he detachably secured together in ahntting engagement and each having a face thereof provided with a lengthwise extending triangular shaped pocket for the reception of an attaching bar carried at one end of a bendable printing plate torconnecting the plate in cylindrical form against said body portion when said sections are in abutting engagement, each oi said pockets of triangular contour throughout, and means engagingwith the ends of said sections when in abutting engagement tor detachably securing said sections together, each of said pockets opening at the inner face and at the periphery of a section.

'7. A plate roll con'iprising a body portion tornied of a pair of semi-cylindrical sections adapted to be detachably secured together in abutting engagement and each having a flat face thereof provided with a lengthwise extending triangular shaped pocket for the reception of an attaching bar carried at one end of bendable printing plate for connecting the plate in cylindrical form against said body portion when said sections are in abutting engagement, each of said pockets of triangular contour throughout, and means engaging with the ends of said sections when n abutting engagement for detachably securing said sections together, each of said pockets opening at the inner face and at the periphery of a section, one of said pockets being of greater width than the other.

8. A plate roll comprising a body portion formed of a pair of detachably connected abutting sections provided on their inner faces with means opening at the periphery of said body portion to receive attaching bars of a bendable metallic plate for detachably connecting the la ter in cylindrical form on said body portion, and means for detachably connecting said sections in abutting engagement, and inter-engaging means provided on the inner faces of said sections to prevent the shifting of one relative to the other when the sections are in opposed relation.

5). A'plate roll comprising a body portion formed of a pair of detachably connected butting sections provided on their inner 01 said body portion to receive attaching bars of a bendable metallic plate for de tachably connecting the latter in cylindrica form on said body portion, and means tor detachably connectnig sald sections in ROBERT JARVIS SNOTHERS.

s with means opening at the periphery 

